A large size panel manufacturing process for electrowetting display (EWD) by using surface treatment and ink‐jet printing (IJP) techniques had been developed. for hydrophilic rib fabrication, surface treatment technique was adopted to reinforce the adhesion of hydrophilic material on hydrophobic layer to achieve large‐Sized panel manufacturing. Also, for dosing of non‐polar liquid, IJP technique was used to dose the liquid into the unit pixel individually. By using IJP technique to dose the red, green, and blue oils, full color of EWD can be achieved without adopting color filter in the future. Here, a 6‐inch monochrome EWD prototype was successfully fabricated by using our proposed techniques.
Engineering three-dimensional (3D) cell-dense tissues with a well-organized structure remains a challenge in tissue engineering. In this study, highly oriented fibrous bundles, consisted of composite fibers of poly(L-lactide-co-glycolide)/superparamagnetic iron oxide nanoparticles, were fabricated using an electrospinning technique. The magnetic properties of the fabricated fibrous bundles were examined by a vibrating sample magnetometer and a superconducting quantum interference device; the results demonstrate that the fabricated fibrous bundles revealed superparamagnetic behavior without magnetic hysteresis. After seeding C2C12 myoblasts on the fibrous bundles, cells were grown along the direction of the underlying fibers (cell rods), an aligned pattern similar to those in native skeletal muscle tissues. When treated with the differentiation medium, myoblasts were fused together and formed multinucleated myotubes. As soon as applying an external magnetic field, the cell rods can spontaneously response to the magnetic control and self-assemble into 3D tissues with a highly ordered architecture. These findings demonstrate that the magnetically susceptible fibrous bundles not only can serve as a functional unit providing the topographic cue for cell orientation, but also can be magnetically manipulated for the creation of 3D cell-dense constructs. This technique may be applied to various cell types and scaffold configurations, thus advancing the design of engineered tissues that more closely replicate native tissues.
Abstract— This paper describes a single‐layered multi‐color electrowetting display (EWD) by using ink‐jet‐printing (IJP) technology and comparing different pattern electrodes with the use of the numerical investigations of ANSYS FLUENT®. This work consists of two parts: the first describes the design of implementing a single‐layered multi‐color EWD and the second demonstrates the application of ANSYS FLUENT® simulation in different pattern electrodes settings on the proposed EWD. The single‐layered multi‐color EW device was evaluated by using various colored oils without adopting a color filter. The single‐layered multi‐color EWD at a driving voltage of 25 V can achieve a maximum aperture ratio and reflectivity of 80% and 38.5%, respectively. The colored saturation of R, G, B oils can increase to 50% (NTSC: 13.3–27.8%). In addition, a radiate electrode at the required viewable area condition of 85% and force 5 * Fk, which results in ink stable contraction and a shorter response time of 50% (radiate vs. square), was proposed. The experimental results and simulation demonstrate that ink‐jet‐printing (IJP) technology along with the use of radiate electrodes can result in a single‐layered multi‐color EWD with a shorter response time.
When we saw the object behind the transparent display, the image blur was observed. In this paper, the phenomenon was evaluated by measuring the diffraction width and MTF (modulation transfer function). By optimizing the pixel layout, the diffraction width of object image could be decreased to 54% in X direction and 48% in Y direction, the MTF also showed that the image quality could be improved by modifying the structure of transparent display.
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